Spring-barrel arrangement for a timepiece

a technology of spring barrel and timepiece, which is applied in the direction of clock driving mechanism, instruments, horology, etc., can solve the problems of barrel core deviating affecting the accuracy of movement or clockwork mechanism, and the spring barrel in the depression can tilt and jam to a considerable extent, so as to achieve the effect of precise mounting of the barrel core and high accuracy of the wheel train of the timepi
US20050249045A1Active Publication Date: 2005-11-10LANGE UHREN
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
LANGE UHREN
Publication Date
2005-11-10

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Abstract

A spring-barrel arrangement for a timepiece includes a fixed plate-like component with a circular cutout. A spring barrel is rotatably mounted in said circular cutout by its corresponding circular outer contour. A barrel core is coaxially rotatably mounted relatice to the spring barrel and is enclosed by a helical tension spring. An inner end of the spring is connected to the barrel core and its outer end connected to the spring barrel. A crown wheel with a toothed ring is fixed to the spring barrel and a first wheel of a wheel train of the timepiece is fixed to the barrel core. The circular cutout is formed through the plate-like component and the spring barrel has two supporting regions which extend radially beyond the diameter of the circular cutout and are each in abutment against one of the mutually opposite side surfaces of the plate-like component.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a spring-barrel arrangement for a timepiece, including a fixed plate-like component which has a circular cutout in which a spring barrel is rotatably mounted by its corresponding circular outer contour, a barrel core which is rotatable coaxially in relation to the spring barrel, a helical tension spring having an inner end connected to the barrel core and an outer end connected to the spring barrel, a crown wheel having a toothed ring being fixed to the spring barrel, and a first wheel of a wheel train of the timepiece being fixed to the barrel core.

[0003] 2. Description of the Related Art

[0004] In a known spring-barrel arrangement, an annular spring barrel is mounted in a cup-shaped depression of a plate-like component. A crown wheel, which is fixed to the annular spring barrel, projects into a large step of the depression. An annular part is connected to the plate-like component ...

Claims

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